Type
Output
REU 18 - 2,5
RDU 18 - 2,5
RDU 18 - 3
RDU 18 - 3,8
RDU 18 - 5
RDU 18 - 6
RDW 18 - 7,5
RDW 18 - 10
RSW 18 - 12
RSW 18 - 15
SE 377*
8,0-11-16
SE 378*
9,5-14-19
* For water heaters 750 and 1000 l only
Series REU, RDU,RDW a RSW could be used for volumes 750 and 1000 l with
Reduction flange
5. Safety fittings
Each pressure hot utility water heater is supposed to be provided with a diaphragm safety valve fixed by a
spring. The nominal inside diameter of the safety valves can be determined according to the diagram.
Heaters 300 l are not provided with safety valves.
Safety valves nominal inside diameter
Power connection
2,5
1 PE-N AC 230 V / 50 Hz
2,5
3 PE-N AC 400 V / 50 Hz
3
3 PE-N AC 400 V / 50 Hz
3,8
3 PE-N AC 400 V / 50 Hz
5
3 PE-N AC 400 V / 50 Hz
6
3 PE-N AC 400 V / 50 Hz
7,5
3 PE-N AC 400 V / 50 Hz
10
3 PE-N AC 400 V / 50 Hz
12
3 PE-N AC 400 V / 50 Hz
15
3 PE-N AC 400 V / 50 Hz
3 PE-N AC 400 V / 50 Hz
3 PE-N AC 400 V / 50 Hz
Heater volum e in
litres
do 200
od 200 do 1000
Heating element
length
)
450
450
450
450
450
500
500
500
500
500
500
500
Minim um
diam eter
1/2" ( DN 15 )
3/4" ( DN 20 )
( l
Maxim um
heater
output
75 kW
150 kW